163805073 has 4 divisors (see below), whose sum is σ = 218406768. Its totient is φ = 109203380.

The previous prime is 163805051. The next prime is 163805077. The reversal of 163805073 is 370508361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163805073 - 2⁹ = 163804561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163805077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27300843 + ... + 27300848.

It is an arithmetic number, because the mean of its divisors is an integer number (54601692).

Almost surely, 2^163805073 is an apocalyptic number.

It is an amenable number.

163805073 is a deficient number, since it is larger than the sum of its proper divisors (54601695).

163805073 is an equidigital number, since it uses as much as digits as its factorization.

163805073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54601694.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 163805073 is about 12798.6355913433. The cubic root of 163805073 is about 547.1534171459.

The spelling of 163805073 in words is "one hundred sixty-three million, eight hundred five thousand, seventy-three".